Overview
Xanthine is a naturally occurring purine base found in various organisms, including humans, plants, and microorganisms. It plays a critical role in purine metabolism as an intermediate in the degradation pathway of adenine and guanine nucleotides into uric acid. Xanthine is also a precursor to other biologically significant compounds, such as caffeine and theobromine. In the pharmaceutical industry, xanthine derivatives like theophylline and caffeine are widely used for their stimulant and bronchodilator effects. The compound is also utilized in research settings to study metabolic pathways and enzyme functions related to purine metabolism.
Physical and Chemical Properties
Xanthine appears as a white to off-white crystalline powder with a slightly bitter taste. It is sparingly soluble in water but dissolves more readily in alkaline solutions. The compound decomposes upon heating to around 300°C, making it relatively stable at room temperature. Chemically, xanthine is a dioxopurine, featuring a purine ring with oxygen atoms at the 2 and 6 positions. Its molecular structure allows it to participate in hydrogen bonding, which is significant for its biological activity. The compound's solubility and stability profiles are important considerations for its formulation in pharmaceutical applications.
Main Applications
Xanthine is primarily used in the pharmaceutical industry, where it serves as a building block for synthesizing drugs like theophylline (used to treat asthma) and caffeine (a central nervous system stimulant). These derivatives are valued for their ability to relax bronchial smooth muscles and stimulate the central nervous system. In addition to pharmaceuticals, xanthine is used in the food and beverage industry as a flavor enhancer and in research laboratories for studying metabolic disorders such as gout and Lesch-Nyhan syndrome. Its role in purine metabolism makes it a key compound in biochemical and medical research.
Safety and Storage
Xanthine should be handled with care to avoid inhalation or direct contact with skin and eyes, as it may cause irritation. Proper personal protective equipment, such as gloves and safety goggles, is recommended when working with this compound. For storage, xanthine should be kept in a cool, dry place, away from light and moisture to prevent degradation. Containers should be tightly sealed to avoid contamination and exposure to air. Long-term storage under inert gas may be necessary for high-purity grades to maintain stability.
B2B Procurement Guide
When procuring xanthine, buyers should verify the supplier's credentials and request certificates of analysis (CoA) to confirm purity and quality. The reference price ranges from approximately $50 to $200 per kilogram, depending on purity levels and order volume. Procurement professionals should also consider the intended application when selecting a grade of xanthine. Pharmaceutical-grade material requires higher purity and stricter compliance with regulatory standards compared to research or industrial grades. Bulk purchases may offer cost advantages, but storage conditions must be carefully managed to preserve product integrity.
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